Box-staying machine and the like.



HfDE SMITH.

BOX STAYING MACHINE AND THE LIKE.

APPLICATION FILED Aue.2s. 19w.

Patented Dec. 3, 1918.

3 SHEETS-SHEET 1.

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H. DE SMITH.

BOX STAYING MACHINE AND THE LIKE.

Patented Dec.

3 SHEETS-SH J Q EEEEE. KL-Ew APPLICATION FILED AUG.25. 19!?- H. DESMITH.

BOX STAYING MACHINE AND THE LIKE.

APPLICATION FILED AUG.25. I917.

Patented Dec. 3, 1918.

3 SHEETS-SHEET 3.

1 INVENTOR ,4 TTORIVEY UNITED STATES PATENT oEEioE.

HENRY DE SMITH, OF ROCHESTER, NEW YORK, ASSIGNOR TO M. D. KNOWETON COM-PANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK. v

BOX-STAYING MACHINE AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 3, 1918.

Application filed August 25, 1917. Serial No. 188,121.

. To all whom it may concern:

Be it known that I, HENRY DE SMITH, a citizen of the United States, andresident of Rochester, in the county of Monroe and State of New York,have invented certain new and useful Improvements in Box-StayingMachines and the like, of which the following is a specification.

This invention relates to improvements in that class ofbox stayingmachines and the like, in which is employed a so-called safety deviceadapted to transmit power from the actuating means to the stay-applyingpresser die only when the latter is in close proximity to the work beingoperated upon. At all other times the presser die will yield if it meetswith an obstruction, such as the operators hand, and therefore no harmwill be done. Such a safety device in the form here shown, and which issubstantially the same as that disclosed in the pending application ofE. M. Hawkins, Serial No. 862,480, comprises two normally finoperativepower-transmitting elements one of which is associated with theactuating means of the machine and the other with-the presser die, andcontrolling means automatically operative in the event of'there be- Iing no obstruction in the path 'of the presser die to establish apositive working connection between said power transmitting elementsjust prior to the engagement of the work by the presser die. The'presserdie 'during the ,main part of its working stroke and preliminary to theestablishmentoof an operative connection between the power transmittingelements, descends under the action of gravity only.

In box staying machines, as well known in the art. a cutting device isemployed for cutting the strip ofstaying material fed to the machine,into stays of desired length for application to the boxes to he stayed.This cutting device usually comprises a stationary cutter and acooperating movablecutter, which latter is usually mounted on thereciprocating'slide which carries the presser die, to be operatedthereby. The arrangement of the cutter in relation to the station'- arydie or anvil on which the boxes are supported, is such that the cuttingof the stay is effected prior to the pressing of the same on'the boxcorner by the presser die, and

p in those machines provided with a safety line 2-2 of Fig. 1;

line 33 of Fig. 1;

operating device as hereinbefore referred to, the cutting of the staytakes place prior to the establishment of a working connection betweenthe power transmitting elements. Therefore, it will be understood thatin such case, the cutter, if dependent for operation upon its connectionwith the sliding head for .the presser die. will be operated only by the,weight of said head and connected parts, and

in some instances it has been found that such we1ght has not beensufficient to overcome the reslstance offered by the stay, in whichevent the cutter and associated presser are stopped in their downwardmovement. This of course prevents the establishment .of a workingconnection between the power transmitting elements and renders themachine inoperative. Therefore, it has "been thev object of the presentinvention to promal operation of both the cutter and presser,

or similar work-performing elements, .ina

machine having a safety operating'deviceof the character referred to forthe presser die. This object is attained by the novel construction,.arrangement and combinations of parts as illustrated in theaccompanying drawings, in which Figure 1 is a side elevation of thefront end of a box-staying machine, with the frame partly broken awayfor the clearer illustration of the safety device and associted parts;

-Fig. 2 is a vertical section taken on the Fig. 3 is a vertical sectiontakenfon the vide means for assuring the proper, and norshown comprisesa stationary die oranvil A for the support of the boxes tobelstayed,and-a movable die B for pressing the stay strips to the box onsaidanvil. The die B is carried bya reciprocatory slide Gpro aid d .Wfli. w dly P e i 91 This pin is connected to and driven by the actuatingshaft E, which, in the present instance, is provided with a crank pin F.

The crank pinF is connected with the pin D by a link device which isconstructed'in the manner hereinafter described, toconstitute the safetydevice hereinbefore referred to. v

This safety link device comprises two power transmitting elements,one-of which is indicated at 1 and is journaled on the crank pin F, andthe other is indicated at 2 and is journaled on the pin D. A bushingtogether,

3 may be interposed between the pin F and the part 1 and a similarbushing 1 interposed between the pin D and part 2. The depending powertransmitting element 1 has a bifurcated lower extremity forming anelongated opening 5, in which the pin D engages v The depending powertransmitting element "1 is provided with a shoulder 9, which is adaptedto engage with a corresponding shoulder 10 formed on the powertransmitting element 2. The parts are normally held in the positionshown in Fig. 2, in which the shoulders 9 and 10 are in engagingrelation, by means of a spring 11, having one or more convolutions woundaround the hub of part," 2, and having oneof its extremities secured tothe part1 and the other extremity 'securedto the part 2, so that thepart 2 will normally be held in the position shown in Fig.2. A suitablestop 12 may be provided for limiting the movement of the part 2.

I An ex'tensionof the pin F is formed into a' cam" 13, and "is so shapedthat just after the movable die A leavesthe work on the up stroke of'thesafety link, the part 2 will be shifted to the position shown by dottedlines in Figs. 2 and 3, in which the shoulders 9 and 10 are out. ofengaging relation. The cam 13 holds the part 2 in this position dur ingthe up and down stroke of the link until the movable die-A, orwork-performing element, is about gof an inch from the work to beoperated upon. At this time, the cam assumes the position shown by fulllines in Fig. 2, and permits the spring 11 to shift the 'part 2 to theposition shown in Fig. 2. The

shoulders?) and 10 are then in engaging relation, and pressure istransmitted from the crank pin through the parts land 2 to the'pin D,the same as if a solid link were provided between'the pins F and D.

. If the work'-p'erforming element, which,

in the present instance, is the movable die 13,-, encountersianyobstacle" during its downward-movement, such as the "operators hand,

'the parts 1 and 2 will yield or move relative to each other, since thepin D and part 2 will be held stationary by the obstacle, and as theshoulders 9 and 10 are not in engaging relation, the part 1' andcrankpin F will continue their downward movement without applying anypressure to the work-performing element. The openings 7 and 5 permitthis relative movement between the parts 1 and 2, and allow the part 1to make its downward stroke without affecting the part 2 which is beingheld stationary by the obstacle under the works-performing element. Whenan obstacle is so met with, and the parts move relative to each other,as just described, the upper extremity of the part 2 will be thrown toone side of the cam 13, and

the cam in descending will move downward relative to the upper end ofthe part 2, in an obvious manner.

' Obviously, any obstruction over %'of an At the rear of the presser dieB is located the cutting device for-severing the strip of staymaterialinto stays of the desired length for application to the corners of theboxes supported on the anvilA. This cutting device as here showncomprises a stationary cutter 15 and a cooperating movable cutter 16.The stationary cutter 15 is carried by a. bracket 17 attached tothe'supporting frame and is formed withan opening 18 through which the"stay strip is'fed to its position over the box corners. The movablecutter 16, in accordance with the presentinvention, is operativelyconnected with the power transmitting element 1 to be positivelyactuated thereby independently of the presser die 'B'and its carryingslide. Any suitable means may be employed for effecting the connectionof the cutter with the element 1'. iAs' here shown, a rod 19 extendsthrough an opening in a boss or projection 20con a plate 21 attached. tothe element 1, and at its upper end is provided with an adjustableshoulder, in the form of a nut 22, for engagement with a washer 23 onthe upper end of the'boss 20, and at its lower end is formed with a hook24 which ,eng'agesthe cutter plate 16 within a slot 25 therein (seeFigs. 3 and 4). With this connection, the cutter is raised by theelement I on its up stroke, and is caused'to descend by said element onits down stroke by means of a spring 26 interposed between a shoulder 27on the rod 19 and the under side of the boss20.

In order to permit of the oscillation'of the element 1 without afiectingthe lateral' position of the rod 19, which, together with the connectingcutter 16, moves in a vertical straight line path, the opening 28 in theboss 20 through which said rod passes is made of substantially greaterwidth than the. diameter of the rod, as shown. The cutter 16andconnected rod 19 are guided in their up and down movements by means of apair of guide plates 30 on .the'bracket 17 engaging with the oppositesides of the cutter. A

By referring to Fig. 1, it will be observedthat there is a substantialclearance space between the rear end of the slide head which carries themovable die'B and the adjacent side of the cutter 16. Because of this,which would permit of the lower hook end of the rod 19 backing out ofthe slot in the cutter and striking against the top of the die B on thedown stroke of the cutter, a plate 31 has been attached to the rear endof the slide head, as by means of fastening screws 32, which plate is ofsuch width as to substantially fill the clearance space and closely holdthe hook end of the rod 19 to its proper connection with the cutter.

The arrangement and organization of the several parts shown anddescribed are such that upon the down stroke of the cutter 16 andpresser die B, the cutter will first cooperate with the stationary knifeor cutter 15 to sever the stay strip and then come to a stop by reasonof the engagement of its lower ends with a pair of stationary stopsurfaces 33. 33. such operation of the cutter being positively effectedby the action of the power transmitting element 1. At this time in theoperation of the parts, the power transmitting elements 1 and 2 are inthe position shown by dotted lines in Figs. 2 and 3, 2'. 0., ininoperative or collapsible relation, but with the element 2 just aboutto be released by the cam13 to be shifted laterallv to o erativerelation with the element 1. 'When this has taken place, pressure willthen be positively transmitted from the crank F to the presser, die Bduring the continued down stroke of the latter, in the mannerhereinbefore referred to.

After the cutter 16 has come to a stop against the stop surfaces 33, thespring 26 merely compresses and allows the element 1 to be carried bythe crank F around itslower center in effecting the continued downstroke of the presser die B, as will be clear by reference to Fig. 3.

It will be understood from the foregoing that the utilization of thesafety link device for positively operating the cutter, does not in anyway affect the safety feature of operators fingers, over a of an inch orthereabout in thickness, and the cutter being located beyond the innerend of the die Is not in a position to engage with and injure theoperators fingers in the event of their being accidentally located onthe anvil in the pat of the descending die.

, What I claim is 1. In a machine of the kind described and incombination, actuating means, a workperforming element, two normallyinoperative power transmitting elements one being associated with theactuating means and the other with the work-performin element, meansnormally operable just prior to the engagement of the work by saidwork-performing element to establish a positive connection between thetwo power transmitting elements, and a second work-performing elementadapted to act on the work in advance ofthe first-named one and prior tothe establishment of said positive connection between the powertransmitting elements and having connection with that power transmittingelement associated with the actuating means to be operated thereby.

2. In a stay-applying machine and in combination, actuating means, astay-applying presser, two normally inoperative power transmittingelements one being associated with the actuating means and the otherwith said presser, means normally operable just prior to the engagementof the work by said presser to establish a positive connection betweenthe two power transmitting elements, and a stay-strip cutter adapted toact in advance of the presser and prior to the establishment of saidpositive connection between the power transmitting elements and havingconnection with that power transmitting element associated with theactuating means to be operated thereby.

3. In a stay-applying machine and in combination, actuating means, astay-applying presser, two normally inoperative power transmittingelements one being associated with the actuating means and the otherwith said presser, means normally operable just prior to the engagementof the work by said presser toestablish a positive connection betweenthe two power transmitting elements, and a stay-strip cutter adapted toact in advance of the presser and prior to the establishment of saidpositive connection between the power transmitting elements and having ayielding connection with that power transmitting element associated withthe actuating means to be operated thereby.

4. In a stay-applying machine and in combination, actuating means, astay-applying presser, two normally inoperative power transmittingelements one being associated with the actuating means and the otherwith said presser, means normally operable just prior to the engagementof the work by said presser to establish a-positive connectionbetweenthe' two power transmitting elements, a stay-strip cutter adaptedto act in'advance 'ofthe presser and prior to the establishment of saidpositive connection between the power transmitting elements and having aloose connection with that power transmitting element associated withthe actuating meansto be operated thereby, and guiding means for thecutter.

5. In a stay-applying machine and in combination, actuating means, astay-applying presser, two normally inoperative power transmittingelements one being associated with the actuating means and the'otherwith the presser, said power. transmitting elements being provided withshoulders adapted to engage to transmit power from the sesametransmitting elements just before the'presser 'rea'chesthe work to causesaid shoulders to engage and thereby establish a positive connectionbetween the two, and a:stay-strip cutter adapted to'act inadvance of thePresser and priorvto the establishment of said positive connectionbetween thevpower tion with that power transmitting element associatedwith the actuating means to be operated thereby'independent of thepresser.

Signed at Rochesteiyin the county of Monroe and State'of N ewYork, this4th day of August, A. D. 1917; p I g {HENR DE SMITH.

Witnesses: I

Tnos. D. PATTON; HUBERT J. MARTIN;

Copiescfthis Patent may be obtained for five cents ea'ch, byvad dressi t(commissioner of Patents. y Washingt t g g transmitting elements andhaving connec-

